Vulnerabilities > CVE-2019-17402 - Classic Buffer Overflow vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
Exiv2 0.27.2 allows attackers to trigger a crash in Exiv2::getULong in types.cpp when called from Exiv2::Internal::CiffDirectory::readDirectory in crwimage_int.cpp, because there is no validation of the relationship of the total size to the offset and size.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 1 | |
| OS | 2 | |
| OS | 4 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
NASL family Debian Local Security Checks NASL id DEBIAN_DLA-2019.NASL description A corrupted or specially crafted CRW images might exceed the overall buffersize to cause a denial of service. For Debian 8 last seen 2020-06-01 modified 2020-06-02 plugin id 131437 published 2019-12-03 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/131437 title Debian DLA-2019-1 : exiv2 security update NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-4159-1.NASL description It was discovered that Exiv2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 130148 published 2019-10-22 reporter Ubuntu Security Notice (C) 2019 Canonical, Inc. / NASL script (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130148 title Ubuntu 16.04 LTS / 18.04 LTS / 19.04 / 19.10 : exiv2 vulnerability (USN-4159-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2020-0860-1.NASL description This update for exiv2 fixes the following issues : CVE-2018-17581: Fixed an excessive stack consumption in CiffDirectory:readDirectory() which might have led to denial of service (bsc#1110282). CVE-2019-13110: Fixed an integer overflow and an out of bounds read in CiffDirectory:readDirectory which might have led to denial of service (bsc#1142678). CVE-2019-13113: Fixed a potential denial of service via an invalid data location in a CRW image (bsc#1142683). CVE-2019-17402: Fixed an improper validation of the relationship of the total size to the offset and size in Exiv2::getULong (bsc#1153577). CVE-2019-20421: Fixed an infinite loop triggered via an input file (bsc#1161901). CVE-2017-9239: Fixed a segmentation fault in TiffImageEntry::doWriteImage function (bsc#1040973). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-04-10 modified 2020-04-06 plugin id 135223 published 2020-04-06 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/135223 title SUSE SLES12 Security Update : exiv2 (SUSE-SU-2020:0860-1)